Transcript Observations and their analysis in WCRP/COPES

Observations and their Analysis
for WCRP/COPES
Master-Untertitelformat bearbeiten
Kevin Trenberth
Chair
WCRP Observation and Assimilation Panel
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WCRP:
WMO/IOC/ICSU
World Climate Research Programme
TOR for WOAP:
paraphrased
 Identify climate observational requirements
 Help optimize observations
 Act as a focal point for WCRP interactions with other
groups
 Promote and coordinate analysis, reprocessing,
reanalysis and assimilation
 Promote and coordinate information and data
management activities, including web sites.
Observations include those from space platforms.
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World Climate Research Programme
WOAP-1
7/ Draft and send a letter on need to exploit satellite
data we already have and continue observational
streams on behalf WCRP, signed by P. Lemke, to CEOS
members and GEO co-chairs. Point out and endorse
GCOS IP, WCRP needs, GEOSS links. Main points:
1) ensure the continuity of established capabilities;
2) need for continuity and homogeneity of observations
for climate purposes;
3) need for more attention to data synthesis,
reprocessing, analysis and re-analysis of existing
data sets; and
4) recognition of the need for a complementary in situ
observation strategy.
Done 30 June
Response received 15 August (not satisfactory)
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World Climate Research Programme
Key points are:
1) We are not inventing new requirements
2) We are, however, trying to help establish priorities
and to sharpen those:
•Continuity, continuity continuity:
•Needed in any strategy for future
•Reprocessing and reanalysis of past data
•Calibration, accuracy, benchmarks, in situ
3) Especially at risk now with NPOESS cuts in longer
term.
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World Climate Research Programme
WOAP-1
Reanalyses
• Establish a clearing house for reanalyses
• Develop strategy of staggering analyses, coordination
• Advocacy
• Progress in building the basic dataset
• Document rationale for reanalyses: atmosphere, ocean,
land, ice, stratosphere, coupled. (Report written)
• Merits, benefits, exploitation of new data
• Explore proposal for a reanalysis workshop to be held
at ECMWF end of June 2006.
• Reanalyses Conference: A proposal to hold the next
major reanalysis conference in Japan in fall 2007 was
passed on and approved.
Topics will include:
Atmosphere, ocean, coupled
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World Climate Research Programme
Reanalysis:
The chief outstanding issue:
The underlying data base is not constant, and changes disrupt
the climate record.
 There is no baseline reference network to anchor the
data
 Radiosondes improve and change type over time
 Satellites only after 1979, last order 5 years, drift in
orbit, change instruments, calibration
 Bias corrections are applied but remain imperfect
 Continuity is a key issue, especially for climate change
 Further technological development, change and
improvement is expected.
 Major challenge is to deal with changing observations
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Conclusion:
Internationally-coordinated reanalysis
activities need to be enhanced and sustained
by the involved Parties to meet the
requirements for monitoring climate trends, to
establish ocean reanalysis for the recent
satellite era, and to include variables related
to atmospheric composition and other aspects
of climate forcing.
From: Executive Summary of
“The Second Report on the Adequacy of The Global Observing
Systems for Climate in Support of the UNFCCC”.
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World Climate Research Programme
WOAP-1
Reprocessing: assess variables for need and readiness,
and commitments. Include in GEOSS.
5 Principles for Re-Processing Climate Data Records
For climate, the value of an observational record increases
with time, provided that the record is continuous and
homogeneous.
As datasets are used, characteristics of the data and
problems are exposed, and often solutions to problems or
algorithm improvements are proposed. This is especially the
case for satellite measurements.
Accordingly, re-processing of the record should be an
integral part of the process of creating a climate data
record.
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World Climate Research Programme
WOAP-1
Task group on data assimilation has written a short report
on issues to be taken up by WOAP:
separate data assimilation activities occur in GEWEX,
CLIVAR, SPARC and CLIC. Issue of resolution of DA
models and full utilization of satellite data.
The data management task group will review existing
WCRP web structure and sites, and make
recommendations for WCRP-wide over-arching
structure and site contents. The data management
task group will propose a data policy for WCRP based
on existing project documents.
http://copes.ipsl.jussieu.fr/Organization/COPESStructure/
WGOA.html
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World Climate Research Programme
CliC Climate and Cryosphere
http://clic.npolar.no/
CliC > CIPO CliC International Project Office
http://clic.npolar.no/org/cipo.php
CliC > SSG Scientific Steering Group
http://clic.npolar.no/org/ssg.php
CliC > ACP Arctic Climate Panel
http://clic.npolar.no/org/acp.php
CliC > DMIP Data Management and Information Panel
http://clic.npolar.no/org/dmip.php
CliC > NEG Numerical Experimentation Group
http://clic.npolar.no/org/neg.php
CliC > OPP Observation Products Panel
http://clic.npolar.no/org/opp.php
CLIVAR Climate Variability and Predictability Programme
http://www.clivar.org/
CLIVAR > GOALS Global Ocean Atmosphere Land System
http://www.clivar.org/organization/streams.htm#GOALS
CLIVAR > DecCen Decadal-to-Centennial
http://www.clivar.org/organization/streams.htm#DECCEN
CLIVAR > ACC Anthropogenic Climate Change
http://www.clivar.org/organization/streams.htm#ACC
CLIVAR > SSG Scientific Steering Group
http://www.clivar.org/organization/ssg/
CLIVAR > GSOP Global Synthesis & Observations Panel
http://www.clivar.org/organization/gsop/
CLIVAR/PAGES > Working Group
http://www.clivar.org/organization/pages/
CCI/CLIVAR > ETCCDMI Expert Team on Climate Change Detection,
Monitoring and Indices
http://www.clivar.org/organization/etccd/
CLIVAR > WGSIP Working Group on Seasonal to Interannual Prediction
http://www.clivar.org/organization/wgsip/
JSC/CLIVAR > WGCM Working Group on Coupled Modelling
http://www.clivar.org/organization/wgcm/
CLIVAR > WGOMD Working Group on Ocean Model Development
http://www.clivar.org/organization/wgomd/
CLIVAR > AAMP Asian-Australian Monsoon Panel
http://www.clivar.org/organization/aamon/
CLIVAR > VAMOS Variability of the American Monsoon Systems
http://www.clivar.org/organization/vamos/
CLIVAR > VACS Variability of the African Climate System
http://www.clivar.org/organization/africa/vacs.htm
CLIVAR > Atlantic Panel
http://www.clivar.org/organization/atlantic/
CLIVAR > Pacific Panel
http://www.clivar.org/organization/pacific/
CLIVAR > Indian Ocean Panel
http://www.clivar.org/organization/indian/
CLIVAR/CliC > SOIP Southern Ocean Implementation Panel
http://www.clivar.org/organization/southern/
CLIVAR > ICPO International CLIVAR Project Office
http://www.clivar.org/organization/icpo/
World Climate Research Programme
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GEWEX Global Energy and Water Cycle Experiment
http://www.gewex.org/
GEWEX > GHP GEWEX Hydrometeorology Panel
http://ecpc.ucsd.edu/projects/ghp/
GEWEX > GHP > DMWG Data Management Working Group
http://www.joss.ucar.edu/ghp/
GEWEX > GHP > SWING Stable Water Isotope Intercomparison Group
http://www.bgc-jena.mpg.de/bgc-synthesis/projects/SWING/
GEWEX > GHP > TWG Transferability Working Group
http://rcmlab.agron.iastate.edu/twg/
GEWEX > GHP > WEBS Water and Energy Budget Studies
http://ecpc.ucsd.edu/projects/ghp/
GEWEX > GHP > WISE Worldwide Integrated Study of Extremes
http://www.meteo.mcgill.ca/wise/
GEWEX > GHP > WRAP Water Resources Applications Project
http://ecpc.ucsd.edu/projects/ghp/Wrap_web/
GEWEX > GHP > AMMA African Monsoon Multidisciplinary Analysis
http://www.amma-international.org/
GEWEX > GHP > BALTEX Baltic Sea Experiment
http://w3.gkss.de/baltex/
GEWEX > GHP > GAME GEWEX Asian Monsoon Experiment
http://www.hyarc.nagoya-u.ac.jp/game/
GEWEX > GHP > MAHASRI Monsoon Asian Hydro-Atmospheric Science Research and predictio
GEWEX > GHP > GAPP GEWEX Americas Prediction Project
http://www.ogp.noaa.gov/mpe/gapp/
GEWEX > GHP > LBA Large-Scale Biosphere-Atmosphere Experiment in Amazonia
http://lba.cptec.inpe.br/lba/
GEWEX > GHP > LPB La Plata Basin
http://www.joss.ucar.edu/platin/
GEWEX > GHP > MAGS Mackenzie GEWEX Study
http://www.usask.ca/geography/MAGS/
GEWEX > GHP > MDB Murray-Darling Basin
http://www.gewex.org/mdb.html
GEWEX > GRP GEWEX Radiation Panel
http://grp.giss.nasa.gov/
GEWEX > GRP > BSRN Baseline Surface Radiation Network
http://www.gewex.org/bsrn.html
GEWEX > GRP > GACP Global Aerosol Climatology Project
http://gacp.giss.nasa.gov/
GEWEX > GRP > GPCP Global Precipitation Climatology Project
http://cics.umd.edu/~yin/GPCP//main.html
GEWEX > GRP > GVaP Global Water Vapor Project
http://www.gewex.org/gvap.html
GEWEX > GRP > ISCCP International Satellite Cloud Climatology Project
http://isccp.giss.nasa.gov/
GEWEX > GRP > SRB Surface Radiation Budget
http://srb-swlw.larc.nasa.gov/Pilot_homepage.html
GEWEX > GMPP GEWEX Modeling and Prediction Panel
GEWEX > GMPP > GABLS GEWEX Atmospheric Boundary Layer Study
http://www.met.wau.nl/projects/Gabls/
GEWEX > GMPP > GCSS GEWEX Cloud System Study
http://www.gewex.org/gcss.html
GEWEX > GMPP > GLASS Global Land Atmosphere System Study
http://hydro.iis.u-tokyo.ac.jp/GLASS/
GEWEX > GMPP > GLASS > ALMA Assistance for Land-surface Modelling activities
http://www.lmd.jussieu.fr/ALMA/
GEWEX > GMPP > GLASS > GLACE Global Land-Atmosphere Coupling Experiment
http://glace.gsfc.nasa.gov/
GEWEX > GMPP > GLASS > GSWP-2 Global Soil Wetness Project
http://grads.iges.org/gswp/
http://www.cic.mq.edu.au/pilps-rice/
World Climate Research
Programme
GEWEX > GMPP > GLASS > PILPS Project for Intercomparison of Land-surface Parmeterization
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SPARC Stratospheric Processes And their Role in Climate
http://www.atmosp.physics.utoronto.ca/SPARC/
SPARC / IPO International Project Office
http://www.atmosp.physics.utoronto.ca/SPARC/office.html
SPARC / SSG Scientific Steering Group
http://www.atmosp.physics.utoronto.ca/SPARC/ssg.html
WGNE Working Group on Numerical Experimentation
http://www.wmo.ch/web/wcrp/wgne.htm
WGNE / AMIP Atmospheric Model Intercomparison Project
http://www-pcmdi.llnl.gov/projects/amip/
WGCM Working Group on Coupled Modelling
http://www.wmo.ch/web/wcrp/wgcm.htm
WGSF Working Group on Surface Fluxes
http://www.wmo.ch/web/wcrp/wgsf.htm
CEOP Coordinated Enhanced Observing Period
http://monsoon.t.u-tokyo.ac.jp/ceop/
Reanalysis Centres
AOPC Atmospheric Observation Panel for Climate
http://www.wmo.ch/web/gcos/aopc.htm
OOPC Ocean Observations Panel for Climate
http://www.wmo.ch/web/gcos/oopc.htm
TOPC Terrestrial Observation Panel for Climate
http://www.wmo.ch/web/gcos/topc.htm
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World Climate Research Programme